Ukudideka Matrices
I-matrix yokudideka iyithebula elilula elihlukanisa izibikezelo zomhleli zibe izibalo ezilungile nezingalungile zekilasi ngalinye.
Uhlolojikelele
It is the raw scoreboard from which nearly every other classification metric is calculated.
I-Deep Dive
I-matrix yokudideka iyigridi eqhathanisa amalebula abikezelwe namalebula angempela. Ekuhlukaniseni kanambambili inamaseli amane: Okuhle Kweqiniso (okubikezelwe kahle), Okubi Kweqiniso (okubikezelwe kahle kunegethivu), Okuhle Okungelona iqiniso (okubi kumakwe ngokungalungile, 'Iphutha Lohlobo I'), kanye Nokubi Okungalungile (okungalungile okungagejiwe, 'iphutha lohlobo II'). Kulezi zinombolo ezine uthola ukunemba ((TP+TN)/ingqikithi), ukunemba (TP/(TP+FP)), ukukhumbula noma ukuzwela (TP/(TP+FN)), ukucaciswa (TN/(TN+FP)), kanye nesikolo se-F1 (indlela evumelanayo yokunemba nokukhumbula). Ezinkingeni ezinamakilasi angaphezu kwamabili, i-matrix iba i-N-by-N, lapho i-diagonal ibamba izibikezelo ezifanele futhi amaseli angaphandle kwe-diagonal aveza kahle ukuthi yimaphi amakilasi adidekayo amanye.
I-Technical Insight
Amandla e-matrix ukuthi igcina ukwakheka kwamaphutha okufihlwa inombolo eyodwa yokunemba. Amamodeli amabili anokunemba okufanayo okungama-90% angaba namazinga ahluke kakhulu angelona iqiniso, abaluleke kakhulu lapho ukuhlonzwa komdlavuza okugejiwe kubiza ngaphezu kwe-alamu engamanga. Ngemigqa yengqungquthela ngokuvamile imelela amakilasi eqiniso namakholomu amakilasi abikezelwe (yize amanye amalabhulali ephequlula lokhu), ngakho-ke hlola njalo amalebula e-eksisi ngaphambi kokuba wenze ikhompuyutha ukunemba uqhathanisa nokukhumbula okuvela kumaseli.
I-Strategic Impact
Izinqumo ezicacile
Kukusiza ukuthi uhlukanise izimangalo ezicacile zobuchwepheshe kusukela olimini lokumaketha.
Izindleko kanye nesabelomali
Ungabuza imibuzo yokusebenzisa kangcono ngaphambi kokusebenzisa imali noma isikhathi.
Ithimba kanye nokusebenza komsebenzi
Amaqembu anokuqonda okwabiwe enza izinqumo ezingcono zomkhiqizo, inqubomgomo, nokufunda.
Ikusasa Lokudideka Matrices
Omatikuletsheni bokudideka bazohlala beyisisekelo, kodwa ukusebenzisa amathuluzi kuwenza acebe: amamephu okushisa asebenzisanayo, ajwayelekile, ukuhlukaniswa kwesigaba ngasinye samasethi amalebula amakhulu, namatrices anesisindo esibizayo aphindaphinda uhlobo lwephutha ngalinye ngesijeziso saso somhlaba wangempela. Ekuhlaziyeni okulungile, odokotela manje babala ama-matric ahlukene okudideka ngokweqembu ngalinye labantu ukuze badalule izilinganiso zamaphutha ezingalingani. Lindela ukuhlanganiswa okuqhubekayo kumamodeli wedeshibhodi lapho ukuchofoza iseli kuveza izibonelo zangempela ezingahlukaniswanga kahle ukuze zihlolwe.
Ukuqaliswa Komhlaba Wangempela
Ukuhlonza lapho isihlukanisi sesithombe sihluleka khona ngokubona ukuthi sivamise ukudida ama-huskies nezimpisi kumaseli angaphandle kwe-diagonal
Ukuhlola ithuluzi lokuhlolwa kwezokwelapha ngokuhlola ama-negative angamanga - iziguli ezinesifo imodeli ethe ziphilile
Ukuqhathanisa izihlungi ezimbili zogaxekile zama-imeyili abelana ngokunemba okufanayo kodwa ezihlukile ngokuthi mangaki ama-imeyili wangempela eziwavimba ngokungalungile (okuphozithiyo okungamanga)
Ukuhlola isiboni esinamadijithi amaningi abhalwe ngesandla ukuze kutholwe ukuthi 4s kanye no-9s ngokuvamile banephutha komunye nomunye.
Izingozi & Guardrails
Amaqembu ahlukene angasebenzisa igama elifanayo ngokuhlukile, ngakho chaza ububanzi kusenesikhathi.
Amabhentshimakhi angabukeka eqinile kuyilapho ukusebenza komhlaba wangempela kungalingani.
Ukuziba ikhwalithi yedatha nezinhlelo zokuhlaziya kuvame ukudala imiphumela entekenteke.
Ukuqalisa Umhlahlandlela
Qala ngencazelo yolimi olulula yomphumela oyidingayo.
Khetha imethrikhi eyodwa yempumelelo nesimo esisodwa sokuhluleka ngaphambi kokuhlolwa.
Qalisa umshayeli omncane onedatha emele, hhayi isethi yedemo ephucuziwe.
Idokhumenti lapho u-Matrices wokudideka usiza khona nalapho izindlela ezilula zingcono khona.
Qhubeka Uhlole
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Umhlahlandlela olandelayo
Ukuqinisekisa Okuphambene
Imibuzo evame ukubuzwa
What is Confusion Matrices?
I-matrix yokudideka iyithebula elilula elihlukanisa izibikezelo zomhleli zibe izibalo ezilungile nezingalungile zekilasi ngalinye. Ibhodi lamaphuzu elingahluziwe lapho cishe yonke enye i-metric yezigaba ibalwa kuyo.
Ku-matrix yokudideka kanambambili, yini i-False Negative?
I-False Negative iwumphumela omuhle imodeli ewugejile ngokuyibiza ngokuthi inegethivu - isibonelo, isiguli esigulayo kwathiwa siphile saka.
Iyiphi imethrikhi ekala ingxenye yamaphozithivu angempela imodeli ewakhomba ngendlela efanele?
I-Recall (ebuye ibizwe ngokuthi ukuzwela noma izinga leqiniso) yi-TP / (TP + FN) — isabelo sezinto ezinhle zangempela imodeli ebanjiwe.
Kumatrix wokudideka ngenkinga enamakilasi angu-5, amele ini amaseli e-diagonal?
Kumatrix we-N-by-N i-diagonal ibamba izimo lapho isigaba esibikezelwe sifana nesigaba sangempela - okungukuthi, izibikezelo ezifanele.
Kungani ukunemba kukodwa kungadukisa ngaphandle kwe-matrix yokudideka?
Amamodeli amabili anokunemba okufanayo angasabalalisa amaphutha awo ngendlela ehluke kakhulu; i-matrix yokudideka iveza ukuthi amaphutha ngokuvamile ama-alamu angamanga noma amaphuzu amahle agejiwe.
Isikolo se-F1 sisho ukuthi yimaphi amamethrikhi amabili?
I-F1 ihlanganisa ukunemba nokukhumbula ibe inombolo eyodwa isebenzisa incazelo ye-harmonic, ejezisa ukungalingani okukhulu phakathi kwakho kokubili.